In reply to SGH Matt:
I used mine on the Ben about that time last year. Obviously as a gas stove the cold temperatures affect the efficiency dramatically. It still works but I wouldn't want to be melting snow on it otherwise you'd have to caryy a whole heap of gas. Be careful it doesn't boil over as when the boiling water touches the gas canister the efficency improves dramatically, causing the water to boil almost instantly and blowing the lid off, sprayin a sinsiter combination of boiling water and pasta all over the inside of your new hilleberg akto and over your sleeping bag...